14:55 duration 14 minutes 55 seconds
Susan Solomon: The promise of research with stem…
Susan Solomon: The promise of research with stem cells
Calling them "our bodies' own repair kits," Susan Solomon advocates research using lab-grown stem cells. By growing individual pluripotent stem cell lines, her team creates testbeds…
14:47 duration 14 minutes 47 seconds
Economic Puzzles - Part 1.mov
06:30 duration 6 minutes 30 seconds
Prealgebra 2.4.3
Even Number = Positive